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EsKi · 2025-01-22

Hi, I have problem. I have idea: my STM32H745 must read GPIO state as quickly as possible. FCPU = ~400MHzI wrote the program in assembler for M7LED_ON()ldr r2, [r3, #IDR]ldr r2, [r3, #IDR]... ~650xLED_OFF()...only read, IDR, no write (no record yet)A...

EsKi · 2025-01-31

I'll try it sometime.I saw that it's a long way from the core to GPIO, but I didn't think it was that far :). And the documentation doesn't have many details about it, so it just came out that way.

EsKi · 2025-01-30

Ok works. It's a pity that it can't be done differently. Creating a 30-40MHz real-time system with non-standard pin analysis is practically impossible with ARM :(. Too large a range of possible problems. My system worked somehow, but it was supposed ...

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STM32H745 input fast read

Re: STM32H745 input fast read

Re: STM32H745 input fast read